Humidity in flower. How worried should I be?

B|uDreamer

Well-Known Member
I'm heading into week 2 or 3 of flower and as expected my humidity levels are rising. I'm finishing this grow out in a closet tent but will be moving to the basement to a dedicated space after this.

Currently temps reach about 80F during lights on with humidity ~45%. It drops about 15 degrees during lights out and humidity reaches ~60% right before they come back on again.

I have a dehumidifier I can put up there but it will raise temps about 5 degrees and I'm not too concerned about optimizing this space as it's temporary.

Thoughts? Am I tempting the bud rot gods?
 

Bodz420

Member
Same issue here I'm in week 2 of flowering and the humidity is on 60 at day it drops to 55 at night, temperature around 27 day - 24 night, some grower's here said as long you have good air flow happening things should be fine. So that's what I am doing now got another small fan and did put one on top and on on the bottom just to keep good airflow.
 

spek9

Well-Known Member
Add some circulation fans. 60% is okay if you keep a lot of air moving. Good luck.
I agree with this. If it starts to drift upwards too much beyond 60% though, I'd sacrifice some temperature rise by running the dehumidifier, but only periodically. Drive the humidity down for a half hour, then let it build up for an hour. The temps should float, staying at the high temp for short bursts only.
 

B|uDreamer

Well-Known Member
Thanks for the input. I've got two clip on fans keeping the canopy gently swaying and one underneath to stir up around the pots. It's also been raining for days around here so I'm hoping that slows soon.

Sounds like if I start seeing a max above 65% I should pull out the dehumidifier though.
 
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